From 3a89ecf04b90ecc0f2c9cd7d4d1787cdcf979c9f Mon Sep 17 00:00:00 2001
From: Valere <bill.carson@valrsoft.com>
Date: Tue, 2 Apr 2024 15:23:11 +0200
Subject: [PATCH 1/2] Add own device creation ts in crypto API

---
 MatrixSDK/Crypto/MXCrypto.h       | 6 ++++++
 MatrixSDK/Crypto/MXCrypto.m       | 6 ++++++
 MatrixSDK/Crypto/MXCryptoV2.swift | 5 +++++
 3 files changed, 17 insertions(+)

diff --git a/MatrixSDK/Crypto/MXCrypto.h b/MatrixSDK/Crypto/MXCrypto.h
index 3f12cdd45..0d26df375 100644
--- a/MatrixSDK/Crypto/MXCrypto.h
+++ b/MatrixSDK/Crypto/MXCrypto.h
@@ -95,6 +95,12 @@ extern NSString *const MXDeviceListDidUpdateUsersDevicesNotification;
  */
 @property (nullable, nonatomic, readonly) NSString *deviceEd25519Key;
 
+
+/**
+* The user device creation in local timestamp, milliseconds since epoch.
+*/
+@property (nonatomic) UInt64 deviceCreationTs;
+
 /**
  The key backup manager.
  */
diff --git a/MatrixSDK/Crypto/MXCrypto.m b/MatrixSDK/Crypto/MXCrypto.m
index fc599496f..c75c39b8d 100644
--- a/MatrixSDK/Crypto/MXCrypto.m
+++ b/MatrixSDK/Crypto/MXCrypto.m
@@ -1422,6 +1422,12 @@ - (NSString *)olmVersion
 #endif
 }
 
+- (uint64_t)deviceCreationTs
+{
+    // Device creation timestamp is not support in legacy crypto
+    return 0;
+}
+
 
 #pragma mark - Gossipping
 
diff --git a/MatrixSDK/Crypto/MXCryptoV2.swift b/MatrixSDK/Crypto/MXCryptoV2.swift
index 2e5c642b7..adea4ac92 100644
--- a/MatrixSDK/Crypto/MXCryptoV2.swift
+++ b/MatrixSDK/Crypto/MXCryptoV2.swift
@@ -56,6 +56,11 @@ class MXCryptoV2: NSObject, MXCrypto {
         return machine.deviceEd25519Key
     }
     
+    var deviceCreationTs: UInt64 {
+        // own device always exists
+        return machine.device(userId: machine.userId, deviceId: machine.deviceId)!.firstTimeSeenTs
+    }
+    
     let backup: MXKeyBackup?
     let keyVerificationManager: MXKeyVerificationManager
     let crossSigning: MXCrossSigning

From e74124ec0c1f368a57826ac67603a9f7b3fdcaca Mon Sep 17 00:00:00 2001
From: Valere <bill.carson@valrsoft.com>
Date: Tue, 2 Apr 2024 18:12:29 +0200
Subject: [PATCH 2/2] deviceCreationTs should be readonly

---
 MatrixSDK/Crypto/MXCrypto.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MatrixSDK/Crypto/MXCrypto.h b/MatrixSDK/Crypto/MXCrypto.h
index 0d26df375..348edddd0 100644
--- a/MatrixSDK/Crypto/MXCrypto.h
+++ b/MatrixSDK/Crypto/MXCrypto.h
@@ -99,7 +99,7 @@ extern NSString *const MXDeviceListDidUpdateUsersDevicesNotification;
 /**
 * The user device creation in local timestamp, milliseconds since epoch.
 */
-@property (nonatomic) UInt64 deviceCreationTs;
+@property (nonatomic, readonly) UInt64 deviceCreationTs;
 
 /**
  The key backup manager.